A great incredibly sturdy quadcopter frame with speed controllers, brushless motors and props. See the DJI video demonstrating just how strong this frame is. The FlameWheel series is multi-rotor frame designed for all pilots for fun or AP. With the DJI WKM or NAZA autopilot system, it can hover, cruise, and even perform acrobatic flight elements. It can be used for entertainment, aerial photography, FPV and other aeromodelling activities. A very versatile and durable frame set.